Coking and steam-producing attachment for furnaces.



No. 679,796. Patented Aug. 6, I90I.

T. J. TILLER.

comma AND STEAM PRODUCING ATTACHMENT FOR FURNACES.

(Application filed Dec. 10, 1900.)

2 Sheets-Sheet i.

(No Model.)

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No. 679,796. Patented Aug. 6, IQOI. T. J. TILLER. COKING AN'D STEAMPRODUCING ATTACHH'ENT FUR FURNACES.

(Application filed Dec. 10, 1900.)

2 Sheets-Sheet 2.

(No Model.)

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' UNITED STATES PATENT OFFICE.

THOMAS J. TILLER, OF RICHMOND, VIRGINIA, ASSIGNOR OF THREE- FOURTHS TOWYATT L. GOODE, RICHARD N. GOODE, LOUIS GOLD- BAOK, JOS. KENDLER, AND H.BERNSTEIN, OF SAME PLACE.

COKING AND STEAMTPRODUCING ATTACHMENT FOR FURNACES.

SPECIFICATION forming part of Letters Patent No. 679,796, dated August6, 1 901.

Application filed December 10,1900. Serial No. 89,825- CNo model.)

To all whom it may concern:

Be it known that I, THOMAS J. TILLER, of Rlchmond, in the county ofHenrico and State gas producing attachment for boiler furnaces,particularly adapted for locomotive and steamboat furnaces; and itsobject is to provide a coking chamber or oven which may be suspendedwithin the fire-chamber of the furnace and which is preferably providedwith hollow walls and a hollow water grate orbottom to prevent itsburning out and to make the oven also serve as a waterheater for thewater circulating within its In operation coal is introduced into thecoking-oven formed by this attachment and reduced to coke by the heatwithin the fire-chamber, and the generated gases are conducted into thefire-chamber and there burned, and when the coal has been coked it isdumped directly onto the grate in the fire-chamber and there consumed inthe ordinary manner, while fresh coal is placed in the oven to begasified and coked, as before.

My present invention possesses many advantages over the coke-producingboiler-furnaces heretofore known and may be economically adapted tolocomotive and other boiler furnaces now in use. Locomotives to whichthis apparatus may be applied or attached can thus be fired with cokeand will make their own coke by the same fire which is used to generatethe steam, the gases generated in the coking-oven being burned in thefire-chamber, and thus ina measure the coal is caused to coke itself,and the'thick black smoke and waste gases ordinarily generated upon theaddition of fresh fuel to the fire will be almost, if not quite, whollyavoided, with a resultant increased economy of fuel.

The invention therefore consists in the novel construction andcombination of parts hereinafter described and claimed, and the age isprevented by means of glands 71 accompanying drawings illustrate thebest embodiment of the'invention now known to me as applied to alocomotive-boiler furnace.

In the drawings, Figure 1 is a longitudinal section through part of alocomotive-boiler furnace, showing the coking attachment in longitudinalsection. Fig. 2 is a transverse vertical section on line 2 2, Fig. 1.Fig. 3 is a front end elevation of the boiler, showing the waterconnections between the boiler and the coking oven. Fig. 4 is aperspective View of the coking-oven detached. Figs. 5 and 6 are enlargedlongitudinal sectional views of the water hinge connections of thedumping bottom of the oven.

A designates a boilenfurnace of. the ordinary locomotive type, having afire-chamber B and smoke-tubes O leading from said chamber through thewater-space. The chamber is provided with an ordinary grate to supportthe fire, as shown. a

The coking-oven E is arranged in the upper part of the fire-chamber and,as shown, is rectangular in form and has hollow walls formed by metallicsheets f and g, which may be suitably connected by intermediate stays.The bottom of the oven is formed by two hollow plates or grate-pieces FF, which are each supported upon hollow trunnions G and H. The trunnionsG extend through the front plate I) of the fire-chamber and arerotatably connected tothe lower ends of pipes G, which extend to and areconnected with the waterspace ofthe boiler, as shown, and valves 9 areplaced in pipes G for regulating the circulation of water. Leakage isprevented between the pipes G and trunnions G by means of glands gEnlarged bearings 12 may be provided for the trunnions G where they passthrough the outer wall I). The trunnions H are rotatably journaled inhollow extensions 92 of the sides of the oven, as shown, and leallf- T eoven is suspended in the fire-box by means of tubular hangers, whichconnect its top with 5 the water-space of the boiler above thefirechamber, and thus free circulation of water through the walls andbottom-plates of the oven is provided for. A suitable number andarrangement of hangers 'i may be employed to hang the oven in positionfrom the plate D, and it may be additionally supported, if required, inany desired way. The upper and lower walls f g of the plates F may hestayed in any suitable manner.- As shown, tubular stays Z are employed,and like stays k may be used in the sides of the oven, or solid staysmaybe used,if desired, especially in the sides, or the latter maybe leftimperforate, front end of the oven is left open; but in this opening ais fitted a collar e, which is also fitted toan opening in the frontplate b 'of the fire-chamber, and through this opening coal may beintroduced into the coking-oven,

and this openingmay-be closed by a door e,

which is shown of conventional construction and is preferably made toclose tightly. In. kindling thefire fuel may be introduced intov the.fire-chamber B through thBdOO 12,.hs usual. The inner end of the oven isslant-ed rearwardly and upwardly, as at m, leaving free wayfor theescape of the heatedprod-- nets of combustion through the tube 0.

K K are pipes by which the gases from the oven are conducted into thefire-chamber to be consumed I i As the bottom plates Fjof the oven arehinged, it is necessary to provide means for 1 n o ver g y b6 a tachedahead-- operating them. As shown, levers g are connected to thetrunnions G and in turn are connected by rods i to the opposite ends ofan intermediate lever I, which is pivoted on a stud '5, projecting fromthe plate '17". To

leve 9 y' h c th y t of levers may be op a s s to either close th d rstheposi-tionshown in full lines, OitO open thedoors in the positionshown in dotted lines in said figure. A stop 0 is attached to plate I)in position to be engaged by lever g and hold'the same in the positionto which it is adjusted.

, In operating the apparatus fire is'kindled in the fire-chamber Bthrough the door I) in any suitable manner, and coal is introduced intothe coking-oven E] through the door 6. The coal is "coked in the oven bythe heat in the fire-chamber, and the gases escaping from 6o cokeinstead of fresh coal in-the fire-chamber. 1

the black smoke and soot which are always the oven are conducted back tothe fire-chamber through pipes K and consumed therein;

When the coal. in the oven is coked, it may be dumped into thefire-chamber to maintain combustion therein, while fresh coal is placedin the coking-chamber. It will be observed that not only is the coalcoked in the cokingcharnber, but that the hollow Walls Of the latter areused to heat the water, and thus the coking-oven is prevented from beingrapidly destroyed by the heat, as it might be if thewalls were solid.Obviously by burning the generated whenever fresh coal is thrown uponthe-fire of a boiler-furnace is avoided anda clean fire'is maintained,such as, is found in.

coke-burnin g furnaces, and the invention will The therefore be of greatn tility on railways,where the smoke and .cinders of ordinarycoal-burning locomotives are such a great annoyance and detriment. ,flheinvention also economizes fuel by burning the gases generated in thecoking-oven during the heating of the coal therein, which ordinarilywould be carried ofiv with the products of combustion and wasted, 7

[By providing the oven with hollow walls,

as shown,and connecting the same with the water-heating space of theboiler it is obvious that the water-heating surface is greatly enlarged,and as the coking-oven is located in the hottestpart "of thefire-'boxthe water in the Wallsthereof will be very highly heated,

and thus become a very efiicient auxiliary to increase the steamingcapacity of the boiler, water beingadmitted freely into the hollow wallsthrough the pipe connectionsand steam also readily escaping back intothe boiler through the same.

Having thus described my invention, what I therefore claim as new, anddesire to secure y Let rs ate t the eon, is;

l. The combination with a boiler-furnace, of a cokingoven suspended inthe fire-chamher, said even being provided with hollow plates formingitsbottom, means for dumpingsaid plates, and connections for circulatingwater through said plates, substantially as described. V Y

The combination with a boiler-furnace, of a coking-oven suspended in theupper part of the fire=chamber and provided with hollow bottom-plateshinged on tubular supports,and

coking-oven suspended in the fire-chamber thereof and having hollowwallsand hollow dumping bottom-plates,water connections between thehollow walls'of the oven and plates,

and the water-space of the boiler, means for introducing coal into theoven, means for conducting the gas from the oven into the firechamber,and means for dumping the bottomplates to discharge the coke from vtheoven into the lire-chamber, substantially as describedt i v 5,. Thecombination with a boiler-furnace,

Of. a cokingoven suspended in the upper part 1 of the fire-chamber, saidoven being provided with hollow plates forming its bottom, said platesbeing hinged on tubular supports, and connections for admitting waterthrough said supports'into said plates; with meansfor in- IIO troducingcoal into the oven, and connections between the hollow bottom-plates andthe Water-space of the boiler, for the purpose and ated in the oven intothe fire-chamber, and

ducting gases generated in the oven back into the fire-chamber, andpipes connecting the trunnions of said bottom-plates with thewater-space of the boiler, all substantially as and for the purpose setforth.

8. The combination of a boiler-furnace, a coking-oven in thefire-chamber thereof having opposite hollow bottom-plates provided withhollow trunnions extending through the front wall of the fire-chamber,levers connected to the said trunnions, an intermediate pivoted lever,and links connecting said le-' vers to the opposite ends of said pivotedlever whereby said bottom-plates are opened or closed simultaneously,and water connections between said plates and the boiler, all substantially as and for the purpose described,

9. The combination of a boiler-furnace, a hollow-Walled coking-oven inthe upper part of the fire-chamber thereof having opposite hollow platesforming its bottom, the levers connected to the trunnions of saidplates, the links connecting said levers to the opposite ends of anintermediate pivotedlever where'- by said plates are opened or closedsimultaneously, pipe connections between the hollow walls of the ovenand the water-space of the boiler, and pipe connections between thewater-space of the boiler and the hollow bottom= plates, and means forconducting gases from the oven into the fire-chamber, substantially asand for the purpose set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

THOMAS J. TILLER, Witnesses:

C. P. GARDWELL, ALEX. STUART GIBSON.

